Gold fineness 995/1000 least, and called gold bullion, its purity was 999.9 mark. The following is the London gold market weight of other associations accredited bullion fineness, these bars are usually plus a premium to the spot price of gold in London by changes in different markets to buy or sell.
In troy ounce of gold content calculated:
|Source: Association of London gold market|
Most gold-plated product is used as a substitute for K gold, while the thickness of places in units of millionths of an inch. The following table is a measure of the change.
Measure of change
|1 million per inch =||0.0254 Majesty(Millionth / m)|
|1 mil =||25.4 Majesty(Millionth / m)|
|1 millionth of a meter =||39.37 Millionth / m|
|1 thousandth of a meter =||39.37 Thousandth / inch|
Gold purity is generally expressed by the following three ways:
|Percentage (100 units )||Fineness (100 units)||K Gold (24units )|
|100 %||999 Fine||24 Karats|
|91.7 %||917 Fine||22 Karats|
|75.0 %||750 Fine||18 Karats|
|58.5 %||583 Fine||14 Karats|
|41.6 %||416 Fine||10 Karats|